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# in a lxc container, events for network interfaces do not
# get created or may be missed. This helps cloud-init-nonet along
# by emitting those events if they have not been emitted.
start on container
stop on static-network-up
task
emits net-device-added
console output
script
# if we are inside a container, then we may have to emit the ifup
# events for 'auto' network devices.
set -f
# from /etc/network/if-up.d/upstart
MARK_DEV_PREFIX="/run/network/ifup."
MARK_STATIC_NETWORK_EMITTED="/run/network/static-network-up-emitted"
# if the all static network interfaces are already up, nothing to do
[ -f "$MARK_STATIC_NETWORK_EMITTED" ] && exit 0
# get list of all 'auto' interfaces. if there are none, nothing to do.
auto_list=$(ifquery --list --allow auto 2>/dev/null) || :
[ -z "$auto_list" ] && exit 0
set -- ${auto_list}
[ "$*" = "lo" ] && exit 0
to_emit=""
for iface in "$@"; do
[ "$iface" = "lo" ] && continue
# skip interfaces that are already up
[ -f "${MARK_DEV_PREFIX}${iface}" ] && continue
initctl emit --no-wait net-device-added "INTERFACE=$iface" &&
emitted="${emitted} ${iface}" || :
done
[ -z "${emitted# }" ] ||
echo "${UPSTART_JOB}: emitted ifup for ${emitted# }"
end script
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